Mine door



Sept. 30, 1924. Hmsm E. L, BAILEY ET AL MINE DOOR Filed July 5, 1924 2711 l f@ LA@ 2 fg 't m j 50 @nml A /l a y ill/'19 3 g EIIIlIl-llillf@ A l JL, l. g l

Patented Sept. 30, 1924. l 'fr-ff.

ERNEST L. BAILEY, CHARLES SCOTT, AND WALLACE VJILEY, OF LOOKOUT, KENTUCKY.

MINE DOOR.

Application filed July 3, 1924. Serial No. 724,096.

To all whom 'it mag/concern.' side of the doorway, and adjacent the hinged Be it known that we, ERNEST L. BAILEY, end of the door, are the vertically disposed CHARLES H. SCOTT, and ALLACE WILEY, grooved wheels 16 and 17 respectively. Secitizens of the United States, residing at cured to the upper edge of the door 13, at a Lookout, inthe county of Pike and State point approximately midway of the length 60 of Kentucky, have invented certain new and thereof, is one end of a cable 18, the same useful Improvements in Mine Doors; and passing around the opposite side ot' the we do hereby declare the following to be a wheel 15, and thence over the wheel 16, full, clear, and exact description of the inwith a weight 19 secured to its pendent end.

vention, such as will enable others skilled in similar cable is secured to the upper edge 65 the art to which it appertains to make and of the door, adjacent the point of attachment use the same. of the cable 18, as shown at 20, said cable 2O This invention relates to new and useful engaging around the near side of the wheel improvements in doors and operating means l5, and thence through the pulley 17, and

' therefor, and particularly to doors used in having a Weight 21 secured to its pendent mines. end.

One Object of' the invention is to provide Secured t0 each Side face Of the ClOOl 13, a device of this character wherein the door and eXtending longitudinally thereof, is an is normally maintained in closed position, Outwardly bowed bumper bar 22, against 2o but is Capable of being pushed into Open powhich the locomotive is adapted to strike, sition by the locomotive, and closing after to push the door into open position, said the train has passed bar being engaged by each car, as the car Another object is to provide a door of this paSSeS through the doorway, whereby the character which is capable 'of being opened door is maintained in open position until from either direction, and which has means the last car oil the train has passed through SU against which the locomotive is adapted t0 the doorway. A handle 23 is Secured t0 the strike, to cause the door to swing open, and lOWel POTOH 0f the 0.013 011 elCh Side, t0 whereby the door is protected from excessive permit manual opening and closing of the wear. door.

Other objects and advantages will be ap- As the door is swung in one direction one 85 parent from the following description when of the cables will exert a pull on the weight taken in connection with the accompanying carried by the other end thereof, with the drawing. result that said weight will be elevated.

In the drawing: When the door has 'been moved until it is Figure 1 is a cross sectional view through beyond the ends of the ties 24, the other ca- 90 amine tunnel, showing the door in closed poble is pulled to a slight degree, with the resition. sult that when the last car has passed out Figure 2 is a horizontal sectional view on of contact with the door, the combined acthe line 2-2 of Figure 1, the door being tion of the descent of the two weights will 40 in open position. impart an initial closing impulse to the 95 Referring particularly to the accompanydoor, thus insuring the proper closing ing drawing, 10 represents the railway, in thereof. the tunnel 11, of a mine, while 12 repre- What is claimed is: sents the doorway frame of the tunnel. 1. A mine tunnel closure including a door- Hinged to one of the uprights of the door way, a door mounted for swinging move- 10U way frame 12 is the horizontally swingable ment in the doorway, car engaging bumpers door 13, said door extending across the railon the opposite sides of the door, and way, and completely closing the doorway, weights for yieldably holding the door in except for the small space below the door, closed position.

above the rails. Rotatably supported in a 2. A mine tunnel closure including a door- 105 horizontal position, in a recess 14C, in the way, a door mounted for swinging movelower face of the transverse members of the ment in the doorway, car engaging bumpdoorway frame, and adjacent the hinged ers on each side of the door, a horizontal end of the door, is a grooved wheel 15. Susgrooved wheel mounted in the upper side ot pended from the roof of the tunnel, at each the doorway, vertical grooved wheels at op- 110 posite Sides of the doorway at the supported side of the door, and weight carrying Vcables connected with the door and engaged with the wheels. Y

3. In a mine tunnel closure, a doorway,V a horizontal grooved wheel mounted in the upper portion of the doorway7 a door hinged in the doorway for swinging movement in either direction, vertically disposed grooved wheels suspended from the ceiling of the tunnel at opposite sides of/the doorway and adjacent the hinged side of the door, cables connected to the door and engaged around the rst wheel and extending in opposite directions longitudinally of the tunnel and over the second pulleys respectively, and weights carried. by the pendent ends Qi the cables.

In testimony whereof, we alix our signatures, in the presence of two witnesses.

WALLACE WILEY.

ERNEST L. BAILEY.` v 

